In the United States, there is a birth every 8 seconds, according to the U.S. Census Bureau's Population Clock.
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On average, the stomach produces 2 L of hydrochloric acid per day.
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Asthma cases in Americans are about 75% higher today than they were in 1980.
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More than one-third of adult Americans are obese. Diseases that kill the largest number of people annually, such as heart disease, cancer, diabetes, stroke, and hypertension, can be attributed to diet.
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More than 34,000 trademarked medication names and more than 10,000 generic medication names are in use in the United States.
False killer whales
Apparent and True Orbits of Alpha Centauri.
True-color view of Mars seen through NASA's Hubble Space Telescope in 1999
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Proposed evolution of oxygenic photosynthesis
The proposed evolutionary development of the mammalian